Probe fixing structure capable of being used for ultrasonic stress detection

The invention discloses a probe fixing structure for ultrasonic stress detection, which comprises an ultrasonic probe base structure and a vacuum chuck fixing structure, the ultrasonic probe base structure comprises a base main body, the middle of the top of the base main body is a plane, the outer side of the base main body is an inclined plane, and the plane is provided with a height adjusting threaded hole and coupling agent chambers on the two sides of the height adjusting threaded hole; the two sides of the inclined face are respectively provided with a probe threaded hole used for fixing an ultrasonic probe, and the coupling agent chambers and the probe threaded holes on the two sides are respectively communicated through a coupling agent channel. The probe fixing device can avoid volatilization of a coupling agent, can fix the probe for a long time, reduces inconvenience caused by disassembly and assembly, reduces propagation of ultrasonic signals in the base main body, reduces signal acquisition error